Grid-plate for storage batteries



P; B. R ABE. GRID PLATE FOR STORAGE BAUERIES.

APPucM|o- FILED APR. 30; 1919.

' Patented Jan. 20, 1920.4

h "l I i airl it {the PAUL B. BABE, if? CHICAGO, ILLINOIS, ASSZGHQR TO0. K. GIANT 00., F GARY,

- INDIANA, A CQRPQRATION OF DELAW'ABE.

onrn-rLATE ron sronaon sa-rrnnrns.

To @455 whom it may concern:

lie it known'thatl, PAITL B. Risen, a citizen oi the United States,residing at Chi cage, in the county of Cook and State of lllinois, haveinvented a certain new and useful Improvement in Grid-Plates for StorageBatteries, of which the following is a full, clear, concise, and exactdescription, reference being had to the accon'ipan ying drawings,forminga part of this specification.

My invention relates to grid plans suclt as are employed in connectionwith storage batteries or electric accumulators, and briefly stated, theobjects of my invention are to provide arid plate of this class which,despite the tact that it is capable of being easily and cheaplymanufactured, is

highly etticient in that it effectually supports the proper anode orcathode substance or compound with which said grid plates are providedwhen in use in a battery, and at the same time exposes a maximum area ofthe said compound surface to the electrolyte, wl1icli is. of course,highly desirable.

As is well known, the substances or compounds with which storage batterygrid plates are provided are characteristically fragile, and have atendency to disintegrate and to become separated from the orid plate bywhicn they are carried. it therefore quite a problem to provide a gridplate which will satisfactorily support such a substance or compound,and at the same time expose sufiicient surface of the latter to theelectrolyte. I

I have found that the grid plate structure illustrated in theaccompanying d "awing is particularly advantageous in that it exposes a'maximum surface of the substance or compound carried thereby to theelectrolyte, and at the sametime holdsthe said substance or compoundvery much more securely than does any generally similar grid plate withwhich i am tamiliar.

in the drawing Figure l is an elevational view of one face of a gridplat-e embodying my invention; 7

Fig. 2 is a side view of the same; and- Fig. 3 is an enlargedfragmentary sectional view taken on line 3-3 of Fig. 1.

Similar characters of reference refer to similar parts throughout theseveral views.

The grid plate shown in the drawings is cast in one piece, and is formedof: a suitable Specification of Letters Patent.

metallic material, such, for instance, as an alloy of lead and antimony,which possesses the necessary mechanical strength, and at the same timeproduces no local action in the presence of the other substances in thestorage battery cell.

The grid plate comprises the top and bottom bars and 11 and the spacedlongi' tudinal bars 1:2, 12, all formed in one piece as shown. Formedintegral with. the top. bar 10 is the usual upwardly extending arm 13,

to which a terminal or jumper may be burned or therwise electricallyconnected in a well known manner.

Extending across the spaces between each of the exterior longitudinalbars 12 and the interior adjacent longitudinal bars 12 and also betweenadjacent interior longitudinal bars 12 are two rows of transverse bars14, 14, there being a considerable space between the said parallel rowsof bars, and the bars 14, 14 of the said rows being staggered withrespect to each other, all of which is clearly illustrated in Fig. 3.

It will be noted that each of the bars 14; is provided with an integralinwardly projecting web '15, the said web being of substantiallyequilateral triangular cross section, with the base of the triangle ofsubstantially less width than the inner surface of the her 1%, toprovide shoulders 16, 16. lhe inner edges oi all of the triangular websl6 lie in the same plane midway between the opposite rows of bars 14:.

When the grid plate is t6 be used in a. battery, the usual grid fillingmaterial. is placed upon the grid plate, and in the interstices betweenthe severalgrid plate bars. It Will be noted that the upper and lowersurfaces of the bars 14 are inclined toward each other near the outerfaces of the said bars 14, so that a maximum area of the grid fillingmaterial is exposed to the electrolyte when the grid in use. I havefound that when the grid plate construction herein ,shown and describedis employed, practically no trouble is experienced due to the lliin;material falling out of the grid plate structure, since the staggeredWebs 15 of the opposite rows of bars 14 effectually prevent movement ofthe filling material in the direction of bars 12, 12, while engagementof the filling with shoulders 16, 16 to a, very large extent overcomesthe tendency Patented Jan. 20, 1920.

Application filed April 30, 1919. Serial No. 298,603.

oi the filling material to escape It will be noted thatthe websH, due totheir inwardly tapering form, have a tendency to cause the fillingmaterial to pack toward the middle of the grid plate structure ratherthan to fall out of the same. Having thus described my invention, what Iclaim as new and desire to secure by Letters Patent of the United Statesis:

A grid plate for storage batteries comprising in combination with apairof longitudinal bans, a plurality of transverse bars extendingbetween the longitudinal bars, said transverse bars being disposed inparallel rows, the transverse bars in said parall el rows being locatedin staggered relation to each other, each of said transverse bars beingProvided on its inner surface with a web ot less cross-section than thesaid trans verse bars, said webs projectin inwardly into the spacebetween the parallel rows of said transverse bars substantially as andfor thepurpose set forth.

In witness whereof I hereunto subscribe my name this 22 day of April,1919.

PAUL B, RABE.

VV'itnesses: 4

MARY Fan Perms, EDNA V. GUSTAFSQN.

